Lock



Jan; 27. 1925.

M. MALLIN LOCK Patented Jan. 27, i925.v

tanins MAX MALLIN, OF NEW YORK, N. Y.

LOCK.

Applcationled August 19, 1922.

To all 'whom it may concern.'

Be it known that MAX MALLIN, citizen of the United States, residing at 44 Essex Street, borough of Manhattan, city of New York, in the county of ll ew York and State of New York, has invented certain new `and useful Improvements in Locks, of which the following is a specification.

Myv invention f relates to a new and improved form vof lock.

One of the objects of my invention is to provide a lock which shall be of a very simple and efficient construction and having a minimum number of parts.

Anotherobject of my invent-ion is to provilde a lock having a p-lurality offvertically slidable bolts. Another object of my invention is to provide a new and improved form of tumbler construction.

Other objects of my invention will be set forth in the following description and drawings which illustrate a preferred embodiment thereof.

Fig. 1 is al front elevation.

Fig. 2 is an end,` view.

Fig. 3 is a. front elevation showing part of the frame for the door.

Fig. 4 is a sectional vie-w showing certain details of my construction.

Fig. 5 is al detail view showing the mechanism for causing the handle of the lock to assume al definite position after having been turned.

Fig. 6 shows the same parts as in Fig. 5 but in a different position.

Fig. 7 is view similar to Fig. 1 but showing the parts of the loch in a different position.

Fig. 8 is a view similar to Fig. but showing the parts of the lock in a locked position.

Fi 9 is ay section of the line 9-9 of Fig.

Fig. 10 is a detail sectional view.

The door A fits into the ordinary frame B, one Wall of which is shown in the drawings. This frame B has the ordinary jamb or pro- `iection D. At the top and bottom thereof the door A is provided with metal plates 37 which are secured thereto by screws 38 and 39. 'Fliese metal plates 37 each have three projecting ears 35 and? 36. The frame .B is provided at the top and bottom thereof with metal plates 48 which lit into recesses therein, and are secured thereto by screws 49 and each of these metal plates 48 is provided Serial No. 582,977.

with two lugs 36 so that when the door is in a closed position, as shown in Fig. 1, for eX- ample, all the before mentioned lugs are in alignment and very close to each other.

Ars clearly shown in Fig. 1, for example, the metal plates 37 have a stationary rod 40 secured thereto and this may be called a guide rod because it guides the movements ofthe bolts, as will be later and more fully described.

rllhe mechanism of the lock can be covered by `any suitable cover plate C which is` secured to the metal plates 37 by the screws 39 or by any other suitable means. The shank of the handle 25 of the lock can project through this cover plate C.

As clearly shown in Fig. 1, the lock is provided with upper and lower bolts 50 and 50 which are adapted to enter the lugs located on the metal plates 37 and 48, in order to firmly lock the door. The bolts 50 and 50 are respectively mounted upon slides 34 and 34 which are adapted to be slid up and down along the guide rod 40.

The ends of the slides 34 and 34 which are adjacent the lock mechanism, and which may be called the inner ends, have vertical slots and the front and rear walls thus formed by said slide-s 34 and 34 are connected by means of the pins 15 and 16. Curved levers 11 and 12 which are respectively pivoted to the base plate by pins 13 and 14 have slotted outer ends 17 and 18 which have the said pins 15 and 16 passing through them. These slots 17 and 18 may be open at their ends. Hence when the levers 11 and 12 are revolved towards each other the slides 34 and 34 are caused to move towards each other, thus withdrawing the bolts 50 and 50 from their locking position.

As shown in Fig. 8, when the slides 34 and 34 are substantially adjacent, the door is unlocked, because the bolts 50 and 50 only extend within the lugs 35 connected to the door.

As shown in F igs. 1 and i' the bolts are moved from their locking position to their unlocking position by means of two movements. The first or intermediate movement produces the relative position of the parts shown in Fig. i', and the second or final movement produces the position of the parts shown in Fig. 8. As clearly shown` in Figs. 1 and 8, the inner ends of the levers 11 and 12 are pivotally connected to the slide plate 23 by means of the pins 19 andi 2O on said levers. These pins 19 and 2O project through vertical slots 19 and 20 of the slide plate 23, and one end of each pin may contact with the base pla-te 60. The slide plate 23 has projections 26 at the top and bottom thereof whereby it can be guided by the upper guide plate 24 connected to base plate 60 so as to move to and fro in a. horizontal direction. The bottom of the slide plate 23 is guided by bottom guide plate 24 which is similar in all respects to the upper guide plate.

The inner ends of the levers 11 and 12 are connectedl by means of the spring 21 which is revolubly secured to the slide plate 23 by means of the screw 22. The top and bottom ends of the blade spring 21 are not rigidly secured to the levers 11 and 12 but press against them with considerable force. The pressure of said spring 21 causes the said levers 11 and 12 to reina-in in connection 'with their respective pivots 13 and 14, and

' causes their pins 19 and 20 to remain in the slots 19 andl20. t

When the door is locked, any unlocking movement of the slides 34 and 34 is prey vented by the tumbler 27 which is pivotally connected to the lower guide plate 24 by the pin 14 and which is revolved upwardly by the blade spring 30 connected to the base plate 60 by means of the pins 30 and 31.

In the position shown in Fig. 1, the outer Y tooth 28 of the tumbler 27 tits into a depression in the slide plate 23, so that any inner sliding movement of the said slide plate 23 is prevented. Since the slides 34 and 34 'cannot be moved towards each other, in

what may be called the unlocking direction, without causing the inner sliding movement of the slide plate 23, the door is firmly locked against any unauthorized opening.

In order to operate Vthe tumbler the bottom of the slide plate 23 is provided with Ytwo vertical slots or openings on either side of the central tooth 42 clearly shown in Fig. 8. A forked slide 41 is mounted in these vertical slots so that its legs can slide freely up and down inthe said vertical slots while the headsformed on the said.' slide 41 prevent it from dropping out of or from being removed from the said slots.

As is clearly sho-wn in Figs. 7 and 8, the tumbler 27 is provided with a recess in its operating edge and with an inner tooth 29. The shank 56 of the lock is provided with the usual cam projection 57 and with an operating handle 25, and said shank is also provided with a cam shaped projection 54 having the contour shown in Fig. 6. The inner side of the cover plate C is provided with-a .pawl 44 pivoted thereto at 44 and having an angular depression provided with edges 52 and 53, in the under side thereof. The said pawl 44 is downwardly 6, in which the operating handle 25 is horizontal, as clearly shown in Fig. The

foundation or base plate 60 of the lock is perforated so as to permit the insertion of the outer cylinder 59 having the cani projection 58, which is directly adjacent to and of the same size as the cam projections 57 on the shank 56. This outer cylinder 59 can be revolved by means of an ordinary key having a shank 43, and passing through wards 100. rlhe construction of the wards and of the key is not more specilically illustrated because any known type can be used for this construction.

When the parts are assembled the cam projections 57 and 58 which are each of one half of the width of the heads of the forked slide 41, are adapted to be located directly upon the said heads of the slide 11. Each of the cam projections 57 and 58 has a cam tooth G1 which is clearly illustrated in Figs. 7 and 8.

When either the key or the operating handle is revolved, then the respective cam tooth 61 is adapted to force the forked slide 41 downwardly, so as to depress the tumbler 27, and the said cam tooth 61 simultaneously acts to actuate the slide plate 23.

The operation of my device is as follows:

When the door is unlocked, the parts are in the position shown in Fig. 8. In order to lock the door the slide plate 23 must be moved to the right of the position which it is shown as occupying in Fig. 8 so that it first occupies the position shown in Fig. 7 and then finally occupies the position shown in Fig. 1. This can be done by revolving either the key or the handle 25 so that the respective cam tooth 61, shown in Fig. 8, revolves counter clock-wise. The cam tooth passes over the beveled top of the central tooth 42 of the slide plate, and it then presses upon the right hand head of the forked slide 41` and deprcsses this. This causes the tumbler 27 to be depressed so that the slide plate 23 is no longer engaged by the tooth 28 of the said tumbler 27. The cam tooth 61 is now forced against the adjacent surface of the slide plate 23, and forces it to the right until the said cam tooth 61 passes beyond the adjacent surface of the said slide plate 23. The parts are now in the position shown in Fig. 7. Vhen the cain tooth 61 is again revolved in the same direction as before, it engages the left hand side of the beveled tooth 42 shown in Fig. 8, and moves the slide plate again imanes to the right because, as clearly shown in Fig. 7, the tooth 28 ofthe tumbler 27 no longer engages the slide plate 23.

When the slide plate 23 has been moved into the position shown in Fig. 1, the tumbler 27 is forced upwardly by its blade spring so that any unauthorized movement ofy the slide plate is prevented.

In order to unlock. the door, the key is revolved so that the cam tooth 61 revolves clockwise. 'Ihis again causes the said cam tooth to engage the slide 41 so as to depress the tumbler, and permit the slide plate to be moved to the left of the position shown in Fig. 1.

Another turn of the key will bring the slide plate back into the position shown in Fig. 8.

The revolution of the handle 28 accomplishes the same result and in addition the operating handle is also brought to the horizontal position by means of the pawl 44.

The door is mounted upon an ordinary hinge of any suitable type.

I have described a preferred embodiment of my invention, but it is obvious that numerous changes and omissions could be made without departing' from its spirit as defined in the claims.

I have referred to the parts herein by reference numerals, but I wish to make it clear that wherever I refer to such parts, either in the claims or in the description, I do not wish to be limited to the details illustrated in this embodiment.

The parts of the loc-k can be readily assembled and taken apart.

Thus the slide plate 23 can be made with its bottom slotted part detachable, so that the slide 41 can be put into position and the said bottom part can then be secured to the ends of said plate. The upper and lower guide plates 24 can then be secured to the plate 60 with the pins 13 and 14 secured to said plate 60 projecting through guide plates 24. The levers 11 and 12 can now be mounted on pins 13 and 14 with their attached pins 19 and 20 projecting into the slots 19 and 20 of the guide plate. rIhe spring 21 can now bel secured and placed in the position shown in Fig. 1. The tumbler 27 is mounted on the pin 14 below the lever 12 is mounted thereon so that the spring 21 keeps nearly all of the parts in. position.

I claim 1. A lock having plates 37 adaptedv to be secured to a door, a vertical rod 40 secured to said plates, slides 34 and 34 mounted on said rod 40, lugs secured to said door and to the frame thereof and bolts secured to said slides adapted to enter said lugs.

2. A lock according` to claim 1 having levers 11 and 12 the slides 34 and 34 being connected to said levers 11 and 12, a slide plate 23 connected to said levers 11 and 12, and means for operating sa idl slide plate 23.

3. A lock having plates 37, a rod 40 secured to said plates, slides 34 and 34 mounted on said rod 40, a base plate 60 having pins 13 and 14, guide plates 24 having orifices through which said' pins 13 and 14 project, levers 11 and 12 mounted on said pins 13 and 14 and having pins 19 and 2O respectively connected thereto, the said levers 11 and 12 having slotted ends adapted to engage pins and 16 located on said slides 34 and 34, a slide plate 23 mounted between the guide plates 24, said slide having slots adapted. to engage the pins 19 and 20, and means for reciprocating the slide plate 23.

4. A lock according to claim 3 and having blade spring 19 secured thereto and mounted so as to press against the adjacent ends of the levers 11 and 12.

5. In a lock, a slide plate 23 having its lower part formed with a tooth 42 and having a slot on each side of said tooth and a forked slide 41 mounted in the said slots.

6. In a lock, a slide plate 23 having its lower part formed with a tooth 42 and having a slot on each side of said tooth, a forked slide 41 mounted in the said slots, a tumbler 27 mounted below said slide 41 and adapted to engage the slide plate 23, and a spring adapted to .force the tumbler 27 upwardly.

7. A lock according to claim 6 having a handle 25 and a shank 56 and a cylinder 59, adapted to be respectively operated by said handle 25 and a suitable key, said shank 56 and said cylinder 59 each having a tooth adapted to depress said slide 41 and the tumbler 27 and also actuate the slide plate 23, when said cylinder' is revolved.

8. In a lock, a slide plate 23 having levers 11 and 12 detachably pivoted thereto, a member detachably secured to said plate 23 and adapted to bear against the ends of said levers to prevent the removal thereof from said plate while permitting the free revolution thereof.

9. In a lock, the combination of plates 37 having a rod secured thereto, slides 34 and 34 mounted on said rod 40 and having bolts secured thereto, the said slides 34 and 34 having pins 15 and 16 secured thereto, guide plates 24, a, base plate 60 having pins 13 and 14 secured thereto and projecting thro-ugh openings in said guide plates 24, a slide plate 23 slidably mounted between said guide plates 24, and having pins 15 and 16 and also having vertical slots 19 and 20, levers 11 and 12 mounted on said pins 13 and 14 and having slotted upper and lower ends respectively adapted to engage the pins 15 and 16, the adjacent ends of said levers 11 and 12 having pins 19 and 20 adapted to enga-ge said vertical slots 19 and 20 of said slide plate 23,' a spring 2l secured to the slideV plate 23 and adapted to bear against the adjacent ends of said levers 1l and l2, the lo-Wer part or' slide plate 23 having a tooth 42 With a Vertical Slot on each side thereof, a forked. slide 41 loca-ted n said vertealslots, a tumbler 27 having teeth Q8 and 29 and adapted lo bear against said tumbler 27, and a spring 30 adapted to upwardly force the tumbler Q7, the tumbler 2T being adapted to have its teeth engage said slide plate 23.

In testimony whereof he hereunto afxes his signature.

MAX MALLIN. 

